PRESIDENT Rodrigo Duterte may decide to extend the Visiting Forces Agreement (VFA) between the Philippines and the United States if the US will offer a 'satisfactory explanation' of its actions in one of the disputed territories in the South China Sea that resulted in a 'loss' for the Philippines, Malacanang said on Thursday.

In a television interview on Tuesday, Duterte questioned why the US brokered an agreement that called only for the Philippines to pull out its ships from Panatag Shoal (also known as Scarborough Shoal) during a standoff with China in 2012.